Is this male pattern baldness?Watch
My dad and all my grandparents still have a set of hair btw
By the way...there is nothing wrong with male pattern baldness. It is natural and a masculine trait. Don't let anyone tell you otherwise. The issue is that we live in a society which for some reason casts it in a negative light and people pick up on that/like to see it as a negative. Just remember that most people are idiots and be strong in who you are. Good luck.
There are things you can do and they work better the earlier you start- finasteride/dutasteride and minoxidil. Have realistic expectations though, they're really bad at re-growing hair but fairly good at helping you keep what you've got.